.iframe_holder .embed-container {
  height: 0;
  padding-top: 25px;
  padding-bottom: 67.5%;
  margin-bottom: 10px;
  position: relative;
  overflow: hidden;
}
.iframe_holder .embed-container.widescreen {
  padding-bottom: 57.25%;
}
.iframe_holder .embed-container.vimeo {
  padding-top: 0;
}
.iframe_holder .embed-container embed, .iframe_holder .embed-container iframe, .iframe_holder .embed-container object, .iframe_holder .embed-container video {
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  position: absolute;
}